Drill-press attachment.



No. 736,395. PATENTED AUG. 18, 1903- H. N. HINGKLEY.

DRILL PRESS ATTACHMENT.

APPLICATION FILED FEB. 17. 1602.

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- No. 736,395. v PATENTBD AUG. 18, 1903.

H. N.HINGKLE'Y.

DRILL PRESS ATTACHMENT.

A PPLIOA TION FILED I'EB. 17, 1902.

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PATBNTBD AUG. 18, 1903.

H. N. HINGKLEY.

DRILL PRESS ATTACHMENT.

APPLICATION FILED FEB. 17I 1902. V

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N0 MODEL,

UNITED STATES Patented August 18, 1903.

HOWARD N. HINCKLEY, OF HARTFORD, CONNECTICUT.

DRILL-PRESS ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 736,395, dated August 18, 1903. Application filed February 17, 1902. Serial No- 94,386. (No model.)

To all whom it may concern:

Be it known that I, HOWARD N. HINOKLEY, a citizen of the United States, residing at Hartford, in the county of Hartford and State single spindle; but it can of course be used in connection with any number of spindles. Referring to the drawings, Figure 1 denotes a side view of a drill-press, showing my attachinent applied thereto, the drill being shown in its raised position. Fig. 2 is a view similar to Fig. 1, but with the drill shown in its lowest position. Fig. 3 is a detail of the operating mechanism for the spindle in the reverse position to Figs. 1 and 2. Fig. 4 is a top view of the detail shown in Fig. 3.

Referring to the drawings, a denotes a shaft which is looatedat the back of the ma chine, carrying the cam b. This cam operates against a roller 6 secured to the arm 2, said arm being pivoted to the machine, as is clearly shown. In this aim is a dovetail slot 6. An arm i is secured to a shaft 70, on which is mounted a pinion which engages with the rack on the spindle. The arm 11 is united with the pivoted arm e through the connecting-rod, made up of two parts 0 c, united by a turnbuckle g. One end of this connecting- 'rod is connected with the pivoted arm e by the cross-head F, which is adapted to move in the groove 6 and may be fastened at any desired point by the nutf, having the handle f. The part c of the connecting-rod has a recess H, which fits over a pin h, carried by the arm 11. The upper end of the arm'iis connected with the frame of the machine by the spring m.

The operation of the device is readily understood. Assuming the parts being in the position shownin Fig. 1, the rotation of the cam b to the right gradually throws the arm 6 to the left. This motion is transmitted to ing-rod.

the arm 2' through the connecting-rod c c. As the arm '5 moves to the left the pinion engaging the rack moves the spindle and drill down to the position shown in Fig. 2. Further rotation of the cam 15, which carries its highest point past the roller e permits the arm 2' to be drawn back to the position shown in Fig. 1 by means of the spring m, this motion to the right being transmitted to the arm 6 through the connecting-rod c c.

When the nature of the work which is being done by drill presses is changed, the amount of movement of the spindle mustgenerally be changed, and this is accomplished in my invention by moving the cross-head F in the groove e of the pivoted arm 6. In Fig. 2 the dotted lines show the cross-head moved to the end of the slot in the arm nearest the pivotal point. The dotted lines also show the corresponding position of the vibrating arm 6 and the shortening of the throw of the spindle. Heretofore when the throw of the spindle was to be shortened it was necessary to have a specially-cut cam which would provide the proper amount of movement of the spindle. This, of course, was an expensive and very inconvenient arrangement, and by my invention I accomplish the same results in a far simpler manner. When the throw of the spindle is once accurately fixed, the crosshead is held in its position in the slot by the nutf, having the handlef. When a fine adjustment of the throw of the spindle is necessary-as, for instance, after the sharpening of a drill or the insertion of a new one-this adjustment is obtained by the turnbuckle g, which unites the two parts 0 c of the connect- Ateach end of the turnbuckle there are provided jam-nuts to hold it in position. The latch connection, comprising the pin it and the recess H, by which the connectingrod is connected with the vibrating arm t', permits of readily disengaging the connecting-rod from the vibrating arm, so that the spindle may be raised or lowered with freedom whenever it is desired.

I claim as my invention- 1. In a drill-press the combination withthe spindle and the cam-shaft, of means for delivering the power from the cam-shaft to the spindle to cause its longitudinal movement, said means comprising a vibrating arm connected with the spindle, a second vibrating arm pivoted inoperative relation to the camshaft and actuated thereby, and adjustable connections between the two said arms, substantially as described.

2. In a drill-press, the combination with the spindle and'the cam-shaft, of means for trans: ferring power from the cam-shaft to the spin: dle to cause its longitudinal movement, said means comprising a vibrating arm connected with the spindle, a second arm pivoted in operative relation to the cam-shaft and actuated thereby, a rod adj ustably secured in the lastmentioned arm, and a latch connection between said rod and the first-mentioned arm, substantially as described.

3. In a drill-press the combination with the spindle and the cam-shaft, of means for delivering the power from the cam-shaft to the spindle to cause its longitudinal movement, said means comprising a vibrating arm connected with the spindle, a second vibrating arm pivoted in operative relation to the camshaft-and actuated thereby, and a rod connecting said two arms, said rod being made up of two parts adj ustably secured together, substantially as described.

4. In a drill-press the combination with the spindle and the cam-shaft, of means for delivering the power from the cam-shaft to the spindle to cause its longitudinal movement, said means comprising a vibrating arm connected with the spindle, a second vibrating arm pivoted in operative relation to the camshaft and actuated thereby, and a rod conmeeting said two arms, said rod being made up of two parts secured together in such manner that the length of the rod can be altered, one end of said rod being adjustably secured to the last-named vibrating arm and the other end of the rod having a latch connection with the first-named vibrating arm, substantially as described and for the purposes set forth.

In testimony whereof I afiix my signature in. presence of two witnesses.

HOWARD N. HINOKLEY.

Witnesses:

D. S. KREIMENDAHL, H. E. HART. 

